A hula hoop costs $35. If Erica wants to get one, and has saved $15, how much more money does she need to save in order to buy the hula hoop?

Which of the following equations correctly represents this situation?

35 + d = 15

d - 15 = 35

15 - 35 = d

15 + d = 35

the answer is D 15+d=35

So we kow that Erica has saved 15 dollars and the total she needs to save is 35 dollars, we can use D to describe the difference. So the final equation would be correct.

This is because the final equation put into words is:

I have 15 dollars after adding a certain amount (D) I will end up with 35 dollars total how much is D